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What is the minimum concentration of Mg2+ required to begin precipitating Mg(OH)2(s) in a solution of pH 10.82? For Mg(OH)2, Ksp = 1.8 × 10-11. A. 1.5 × 10-13 M B. 4.1 × 10-5 M C. 1.2 × 100 M D. 3.3 × 10-4 M E. 2.7 × 10-8 M
calculate the molar concentration of O2 in the surface water of a mountain lake saturated with air at 20°C and an atmospheric pressure of 622 torr
A piston has an external pressure of 14.0 torr. How much work has been done if the cylinder goes from a volume of 0.130 liters to 0.530 liters.
Given that the rate constant is 4.0×10-4 at 25.0 degrees C and that the rate constant is 2.6×10-3 at 42.4 degrees C, what is the activation energy in kilojoules per mole?
The heat of vaporization of butane (C4H10) is 21.0 kj/mol. What is the change in entropy when 55.g of butane boils at -.05 degrees Celcius.
A 70.6 L constant-volume cylinder containing 7.44 g Hg is heated until the pressure reaches 3.80 atm. What is the final temperature in degrees Celsius?
describe one or more simple chemical tests that would distinuish acetaminophen from ibuprofem
Calculate the amount of energy in the form of heat that is produced when a volume of 2.73 L of SO2(g) is converted to 2.73 L of SO3(g) according to this process at a constant pressure and temperature of 1.00 atm and 25.0 °C. Assume ideal gas behav..
A 0.9161 g sample which contained monoprotic lactic acid, was dissolved in 75.0 ml of water and titrated to the equivalence point with 32.25 ml of a 0.1057 m NaOH solution.
If the mass of water surrounding the calorimeter was exactly 1000 g and the heat capacity of the bomb calorimeter was 1.75 kJ/°C, calculate the molar heat of combustion of liquid methanol .
Iodine gas and bromine gas combine to form iodine monobromide according to the following equation with an equilibrium constant of 1.2 x 102 at 150 0C. I2 (g) + Br2 (g) 2IBr (g)
What it the chemical reaction between silver ion and excess ammonia.
A fossil fuel containing 84% C, 15% H and 1%S is burned with 20% excess air in a boiler. The stack gases are at 150 C. a) What is the concentration (ppm) of SO3 in the stack if equilibrium is established according to
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